gcleaner | b8847ab80137552fb3cf73bdc522ba695bf7a20bf3a68ef02e940c2d10dc38ee

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
05-09-2024 22:48

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General

Target

b8847ab80137552fb3cf73bdc522ba695bf7a20bf3a68ef02e940c2d10dc38ee.exe
Size

247KB
MD5

0507db046cc1b16a8b8dee003fd92b68
SHA1

35b700c5444f660c7f7e7ddf37d0426b0cac9aef
SHA256

b8847ab80137552fb3cf73bdc522ba695bf7a20bf3a68ef02e940c2d10dc38ee
SHA512

0cd9d164497c7ffaa9350d1c8bee5e26eb7c804868bf07dd821b8f71da8a997bb25346d09557efbae4c96f69f5be16eeed6f6e7bb573179b92a7d70835a5eb0f
SSDEEP

6144:fYNBBE7SlVHBinHGQhmFMUHagyEMVfFGyxB1R1:f6E7SknjmF5HaR3FjR

Score

10^/10

gcleaner discovery loader

Malware Config

Extracted

Family

gcleaner

80.66.75.114

Signatures

GCleaner
GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.
loader gcleaner

Deletes itself 1 IoCs

pid	Process
2884	cmd.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b8847ab80137552fb3cf73bdc522ba695bf7a20bf3a68ef02e940c2d10dc38ee.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
2408	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2408	taskkill.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2172 wrote to memory of 2884	2172	b8847ab80137552fb3cf73bdc522ba695bf7a20bf3a68ef02e940c2d10dc38ee.exe	32
PID 2172 wrote to memory of 2884	2172	b8847ab80137552fb3cf73bdc522ba695bf7a20bf3a68ef02e940c2d10dc38ee.exe	32
PID 2172 wrote to memory of 2884	2172	b8847ab80137552fb3cf73bdc522ba695bf7a20bf3a68ef02e940c2d10dc38ee.exe	32
PID 2172 wrote to memory of 2884	2172	b8847ab80137552fb3cf73bdc522ba695bf7a20bf3a68ef02e940c2d10dc38ee.exe	32
PID 2884 wrote to memory of 2408	2884	cmd.exe	34
PID 2884 wrote to memory of 2408	2884	cmd.exe	34
PID 2884 wrote to memory of 2408	2884	cmd.exe	34
PID 2884 wrote to memory of 2408	2884	cmd.exe	34

C:\Users\Admin\AppData\Local\Temp\b8847ab80137552fb3cf73bdc522ba695bf7a20bf3a68ef02e940c2d10dc38ee.exe
"C:\Users\Admin\AppData\Local\Temp\b8847ab80137552fb3cf73bdc522ba695bf7a20bf3a68ef02e940c2d10dc38ee.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2172
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "b8847ab80137552fb3cf73bdc522ba695bf7a20bf3a68ef02e940c2d10dc38ee.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\b8847ab80137552fb3cf73bdc522ba695bf7a20bf3a68ef02e940c2d10dc38ee.exe" & exit
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2884
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "b8847ab80137552fb3cf73bdc522ba695bf7a20bf3a68ef02e940c2d10dc38ee.exe" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2408

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\8B420DKQ\download[1].htm

Filesize
1B

MD5
cfcd208495d565ef66e7dff9f98764da

SHA1
b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

SHA256
5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

SHA512
31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

Download Submit
memory/2172-1-0x00000000005A0000-0x00000000006A0000-memory.dmp

Filesize
1024KB

Download
memory/2172-3-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/2172-2-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2172-8-0x00000000005A0000-0x00000000006A0000-memory.dmp

Filesize
1024KB

Download
memory/2172-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2172-11-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/2172-23-0x00000000005A0000-0x00000000006A0000-memory.dmp

Filesize
1024KB

Download
memory/2172-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2172-21-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download